Apparatus for making folds in type strips used for casting bars of printers&#39; type



Feb. 9, 1937. SCHNEIDER 2,070,183

APPARATUS FOR MAKING FOLDS IN TYPE STRIPS USED FOR CASTING BARS OF PRINTERS TYPE .Original Filed March 1, 1934 Iu ws Sah \NVENTOQ/ Patented Feb. 9, 1937 UNITED STATES PATENT OFFICE STRIPS USED FOR CASTING BARS PRINTERS TYPE Julius Schneider, Munich, Germany Original application March 1, 1934, Serial No. 713,458. Divided and this application August 8, 1935, Serial No. 35,282.

1 Claim.

The invention relates to apparatus used in the production of type strips, usually but not necessarily of metal, having type characters impressed therein to serve as moulds for casting bars of printers type, the strips being in the course of their preparation doubled or folded in the spaces between the words, so that by subsequent stretching they can be justified for producing lines of the required length.

The invention is concerned with the folding mechanism, and according to the invention this mechanism comprises two pinching appliances, which grip the strip at the ends of the part to be folded, whereupon a movement is imparted reducing the distance between the pincers, so that the portion of the strip between them is doubled. The mechanism may include a driver which is thrust against the strip between the pincers to assist the making of the fold.

An example of apparatus according to the invention is shown in the accompanying drawing, which is a perspective view thereof.

In the drawing l represents the strip, which has two rows of holes 2 punched therein, at a distance apart at least equal to the height of the type characters, which are not shown. These holes are made at the parts where spaces occur between the words. There are two pincers having jaws 3, 3 and 4, 4 respectively. The upper jaws 3 and 4 have pivots 5, and are normally held by springs in the positions indicated by broken lines. The pincers 3, 3 are horizontally movable, so that they can be moved towards the pincers 4, 4 as indicated by the arrow 6, against the action of a spring or equivalent restraining device which pulls them back when they are released. The normal distance between the two pairs of pincers, indicated at l, is equal to the width of the holes 2.

The top jaws being raised, the strip l is fed between the top and bottom jaws by suitable feed mechanism, not shown. When one of the gaps between two consecutive words reaches the position between the pincers a catch or feeler 20 engages into one of the holes 2, stopping the feed. This causes automatic actuation of a clutch whereby a shaft 8 is temporarily connected to the driving mechanism so that it makes one complete revolution. On the shaft there are two cams 9 and Ill, disposed so that in the course In Germany March of the revolution of the shaft the cam 9 first comes into operation and depresses the top jaws 3 4 By this means the strip is gripped at the end of the part to be folded. Then the cam I0 acts on a double armed lever I2 rotating on a pivot II, and this lever moves the pincers 3, 3 towards the pincers 4, 4 so that the portion of the strip between the pincers is folded. When the shaft 8 has completed its revolution the cam 9 releases the top jaws, which swing upwards, and the cam l0 releases the lever I2, which allows the pincers 3, 3 to return to normal position. The feed of the strip is then automatically re-started, and continues till the next pair of holes 2 reaches the position between the pincers, whereupon the series of operations described is repeated. Each folding operation produces three lugs l3, I4, l4 due to the doubling of the strip at the part l5 between two holes and the marginal parts 16 outside the holes.

To ensure that the folding always takes place in the upward direction a driver ll, actuated by the shaft 8 is thrust against the under side of the strip at the part between the pincers, so as to give it a slight upward bend. This driver is automatically withdrawn before the pincers 3, 3 complete their folding movement.

The improved folding appliance has over those heretofore used the advantage of enabling very tight folds to be made, which is of great importance for the accuracy of the work. The present application is a division of application Serial Number 713,458 filed March 1, 1934, now patented, Number 2,023,859, granted December 13, 1935.

What I claim as my invention and desire to secure by Letters Patent of the United States An apparatus for forming folds between the ends of words on an intermittently advanced type strip provided with perforations, the combination of opposed pincers adapted to grip parts of the strip therebetween, means for imparting relative movement to said pincers, a'feeler adapted upon entering one of said perforations to stop advance movement of the strip and to initiate movement of said pincers and a driver actuatable to bend the strip and move the bent portion thereof between the faces of the pincers.

JULIUS SCHNEIDER. 

